Blast-furnace.



PATENTED JAN. 29, 19o?.

E. W. EXON.

T FURNACE.

l N FILED Amm. laos.

,of which the following is a full, clear, and eximproved structural features in blast-furfrnn vsfmrns T FFICE.

BLAST-Femmes.

Specification of Letters Patent.

Patented Jan. a9, 1907.

Application filed August l, 1906. Serial No. S28-.741.

To a/Z/ whom t muy concern.-

Be it known that I, IIIRAM W. HIXON, a citizen of the United States, and a resident of Victoria Mines, in the Province of Ontario and Dominion of Canada, have in vented a new and Improved Blast-Furnace,

act description.

This Invention relates to certainnew and naces for smelting copper ores, copper-nickel ores, or any other which is to be smelted Vto a matte.

The .main features of my improved blastiurnace comprise a lining ofrefractory 1naterial, preferably of niagnesite, and an airjacket constituting a substitute for the waterjackot formerly used and through which the air passes on its way to the twyers.

In my improved form of construct-ion I Obtain. greater economy in fuel to smelt the charge, as all of the heat transmitted through the lining is employed to heat the air in the air-jacket, land this heat is again returned to thefurnace proper as the air enters the twyers. When a water-jacket is employed, all of the heat transmit-ted through thelining is carried away by the Water and is lost, all of 1 this hea t' heilig saved by my improved fur nace in the manner above pointed out.

The magnesite employed as a lining mate rial is highly refractory and is a very good non-conductor of heat, so that by the combined magnesite lining and the air-jacket it is possible to maintain the room in which the blast-furnace is located at a. comparatively low temperature, as there is very little heat lost by radiation.

It is evident that other materials than Inagnesite--as, for instance, chrome brick or silica brick-may be employed in place of the magnesite.

Reference is to be had to thc accompanying drawings, forming a part of this speciiication, in which similar characters of reference j indicate corresponding parts in all the iigores, in Which- Figure 1 isa vertical section illustrating ,l one form of my improved blast-furnace. l Fig. 2 is a vertical section on a plane at right angles to Fig. 1 and on the line 2 2 of said figure, and Fig. 3 is a horizontal section on I the line 3 3 of Fig. .1.

In the form of the invention illustrated I employ a magnesite lining 1, preferablyrecl tangular in Across-section and suitably supported on a base-plate 2 and supporting-legs 3 of any suitable construction.

The blast-furnace isv provided with a slagdischarge port 4 adjacent its lower `end and 6o communicating with a spout 5, preferably formed of magnesite and leadingl to any suitable form of settler 6,.'Whichmay also be formed .of magnesite and provided .with suitable opening 7 for drawing ol the matte and 65 aln overflpW-opening 8 for the escaefpf the s ag. The furnace may also be'provided with a side tap 9 and spout 10,by which the inet-a1 may be drawn off and the furnace completely 7o drained.

Surrounding the main body of the furnace' is provided an air-jacket formed of tank' steel with double walls, and in order to strengthen the walls of the furnace the outer wall 11 of the air-jacket is preferably curved outward, and a plurality of supporting-braces 12 are inserted between the two Walls of the jacket. This prevents sidewellin of the inagnesite lining and serves to hold t e parts 8o in their proper position, asthe air-j acket and its supporting-braces constitute a truss. Each of these supporting-braces 12 extends vertically froin the top of the furnace to the lower end of the air-jacket, thereby forming a plu- 8 5 rality of vertical passage-ways, each of which along two opposite sides of the furnace cornmunicates with a twyer 13, entering the furnace adjacent. its lower endgand through which the air from the vertical passage-ways is admitted to the furnace. To permit of the cleaning out of the twyers should they become obstructed, I provide a plurality of ports in the air-jacket, one opposite each twycr, and suitable closures 14, whereby they may be normally sealed air-tight. The lower end of cach passage-Wayis also preferably provided with a small port and suitable closure 15, whereby any foreign matter collecting in said passage-ways may be removed.

The upper end of the blast-furnace is provided with the customary charge-opening 16 and a downtake 17 tocthe liuc or` chimney. Surrounding the upper end of the furnace is looted an airsupply pipe 18, having a plum5 rality of branches 19 extending therefrom and communicating with 4the passage-Ways in the air-jacket. To maintain an' even distribution of air in the jacket, I provide the ,vertical braces 12, constituting the partitions rio l) etween said passages, with a large number of 'I openings 20, by, which 4the air yma t'ii'eelyA pass from one passage-agay to anot v1n the operation of my improved blast-f .he airliri passingdownward throu h these ,tissage-ways serves to keep the wal s of the nlrnacaeo'rnparatively 'cool and at the same time serves Ato heat up the air which at the lower end of the passage-ways enters the fur- 'nao through the twyers 13. In this way the iieaessity for any auxiliary heating means for :the air supplied hated, and all of the heat formerly carried away by water in the water-j acket is returned to the furnace.

iilany oi" the details of the structure disclosed iii the drawings are not essential to my invention, it is evident that various changes may be made during the practical use of the same Without departing Itrom the spirit of `my invention-aa for instance, windows 'may be inserted whereby the operator may see if the lin@ is gettin red-hot and may control the 'supply of fue to that portion of "the furnaee.

` claim as new, andr desire to secure by Letters jlatent, the followingz. ,.7 1. A blast-furnacacomprising a lining of 3,5l a refractory inaterial,` an air-jacket surroundthe same, the" outer wall of said jacket being curvedroutwardly and provided with vertical partitions between said lining and 'said jacket thereby forming a pluralitv of parallel passages, means'for delivering air to the top of said passages, and twyers'in the lining communicating with the lower ends of' said passages.

-Q. Ablast-furnace, comprising a rectan- -gularlining of refractory material, an air-- j acket surrounding the same and constituting a strengthening-brace for said lining, the outer wall of said jacket being curved outwardly and provided with a plurality oi perorated, vertical partitions between said lin-v ing and s aid jacket, means for delivering air y"to said air-jacket at the upper endy thereof',

` furnace above described the fuel and ore arev lthe vertice' passage-Ways in the air-jaoket;

to the. furnace is elimi- `Having thus described my invention, I

Aing said lining, vertical seaeee iand'm'eans for admitting air fronis'aid jacketl ,through said lining at the lower` end thereof.,

3. blast-furnace, comprising a reetan- 55 guiar linin of inagnesite, an air jacket surrounding tie same, the outer all of said jacket being curved outwardly tud constituting a strengthening-brace for said lining, vertical partitions between said lining and 6o said jacket, thereby subdividing said jacket into `a plurality of vertical passage-ways, twyers in the walls ofsaid' furnace communicating with the lower ends of said passageways, and ports and closures therefor in the 65 outer wall of said air-jacket and in alinenient with each of said twyors, whereby the twyers may be freed from obstructions.

a., A blast-furnace, eompiising'a rectangular refractory lining,`and an air-jacket sur- 7o rounding said lining, the outer wall of said air-jacket being curved outwardly and provided with a plurality of spacing-braces, whereby the air-jacket and its braces constitute a truss for strengthening the walls oi the ,7

furnace.

5. ln a blast-furnace, a lining of refractory material, an air jacket surrounding the same, vertical partitions in said air-jacket, each of said partitions being provided with a 8 i plurality of erforations, twyers communieating with t ie lower end of said air-jacket, and means whereby the twyers may be treed from obstructions and foreign matterremoved from the air-j acket.

6. A blast-furnace, comprising a lining of refractory material, an air-jacket surrounderforated spacing partitions in said air-ja@ et subdividing the space between the jacket ,and the lining into o: a plurality of passages,'n1eans for admitting air to said jacket 'adjacent one end of the assages, meaisier admitting air Jfrom thev ower end of saidy passages through saidlin-l ing, and means or'drawing off the contents 9". of said Vfurnace adj acont' the lower end thereof.

In testimony whereof f'have signed my name to this specificationinlthe presence of two subscribing Witnesses. Y

, .HIRAM Weiss-Hines.

A-llitnessesL l n N. HILLABY,

Jas. F. Niiw'roN. 

